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usb: net: update README.usb to list all USB ethernet options
- extend the discussion of USB network related config options such that all available adapter drivers are listed, and that the 'usb' command for the interactive prompt and scripting becomes available - suggest to *not* put individual IP configuration parameters into the exectuable, but instead to put them into external environment or fetch them from network Signed-off-by: Gerhard Sittig <gsi@denx.de> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Marek Vasut <marex@denx.de>
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@ -127,8 +127,14 @@ To enable USB Host Ethernet in U-Boot, your platform must of course
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support USB with CONFIG_CMD_USB enabled and working. You will need to
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add some config settings to your board header file:
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#define CONFIG_CMD_USB /* the 'usb' interactive command */
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#define CONFIG_USB_HOST_ETHER /* Enable USB Ethernet adapters */
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#define CONFIG_USB_ETHER_ASIX /* Asix, or whatever driver(s) you want */
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and one or more of the following for individual adapter hardware:
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#define CONFIG_USB_ETHER_ASIX
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#define CONFIG_USB_ETHER_MCS7830
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#define CONFIG_USB_ETHER_SMSC95XX
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As with built-in networking, you will also want to enable some network
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commands, for example:
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@ -148,7 +154,10 @@ settings should start you off:
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You can also set the default IP address of your board and the server
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as well as the default file to load when a 'bootp' command is issued.
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All of these can be obtained from the bootp server if not set.
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However note that encoding these individual network settings into a
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common exectuable is discouraged, as it leads to potential conflicts,
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and all the parameters can either get stored in the board's external
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environment, or get obtained from the bootp server if not set.
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#define CONFIG_IPADDR 10.0.0.2 (replace with your value)
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#define CONFIG_SERVERIP 10.0.0.1 (replace with your value)
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